Ceramic-metallic composites devoid of porosity and their methods of manufacture
US11040913B1 · kind B1 · utility
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21Claims
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Key dates
| Filing date | Aug 14, 2020 |
| Grant date | Jun 22, 2021 |
| Priority date | — |
| Expiry date | Aug 14, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C21/02
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Ceramic-metallic composites are disclosed along with the equipment and processes for their manufacture. The present invention improves the densities of these composites by eliminating porosity through the use of a unique furnace system that applies vacuum and positive gas pressure during specific stages of processing. In the fabrication of Al2O3—Al composites, each process commences with a preform initially composed of at least 5% by weight silicon dioxide, and the finished product includes aluminum oxide and aluminum, and possibly other substances.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.